Yankees ace Masahiro Tanaka will be placed on the 15-day disabled list with tendonitis in his right wrist and a right forearm strain, the team announced Tuesday, and could be kept out of action for at least one month.

New York general manager Brian Cashman referred to Tanaka's forearm strain as "very mild," and not even significant enough to merit a classification of a Grade 1 strain. An MRI on the pitcher's right wrist revealed tendonitis, while an MRI on his right elbow showed no elbow damage, according to the YES Network.

He will be shut down for between seven and 10 days, and if all goes according to plan, will rejoin the rotation in a roughly a month, the YES Network reported. Cashman did not rule out the possibility that the injury was a precursor to Tommy John surgery, the New York Daily News reported.